Stone-saw.



J. GILLIES.

STONE SAW.

APPLICATION FILED DEC. 21, 1908.

3 SHEETSSHEBT 1.

l ,6 fi' 5 i Z; "H1, W} h 12 awl' ((h est Inventor: fiwm by 0% J.GILLIES STONE SAW. APPLIOATION FILED DEG. 21, 1908.

938,473, Patented Nov. 2, 1909.

3 SHEETSSHEET 2.

Inventor fim m I by J. GILLIES.

STONE-SAW.

APPLICATION FILED DEC. 21, 1908.

938,4:73. I Patented Nov. 2, 1909,

3 SHEETS-SHEET 3.

25 Inventor by 4 A tlys JOHN GILLIES, OF NEW YORK, N. Y.

STONE-SAW.

Specification of Letters Patent.

PatentedNov. 2, 1909.

Application filed. December 21, 1908. Serial N 0. 468,571.

To all whom it may concern:

Be it known that I, J OHN GILLIEs, a citizen of the United States ofAmerica, and a resident of the city of New York, county of Queens, andState of New York, have invented a certain new and useful Stone-Saw, ofwhich the following is a specification.

My invention relates to gang saw stonecutting machines, and involvesimprovements in the support of the sash or saw frame and improvedbearings for said sash or frame, and means for preventing grit fromreaching said bearings.

The objects of my invention are to improve stone saws of the typereferred to, to make the supports for the sash or saw frame more steady,to improve the bearings of the saw. frame, to prevent the entrance ofgrit and the like to said bearings, and generall to make the machinemore simple, durable and accurate.

I will now proceed to describe my invention with reference to theaccompanying drawings, illustrating one embodiment thereof, and willthen point out the novel features in claims.

In said drawings: Figure 1 shows an end elevation of the machine; Fig. 2shows a side view of the machine; Fig. 3 shows a detail vertical sectionof one suitable type of bearings for the saw frame, and adjacent parts,illustrating one construction of means for preventing dust and the likefrom entering the bearings; Fig. 4 shows a side elevation of one of thebearing guards; and Fig. 5 shows a perspective elevation of one of thebearing guard boxes by which the bearings of the saw frame are inclosed.Fig. 6 shows an end elevation of an alternative form of machine,comprising an alternative arrangement of suspender links. Figs. 7 and 8illustrate another suitable construction of bearing for the saw frame,Fig. 7 showing a transverse section through the bearing and Fig. 8 alongitudinal section on the line 8-8 of Fig. 7.

The stone cutting machine herein illustrated, comprises the usual mainframe consisting of uprights 1, 1 connected longitudinally by framemembers 2 and connected transversely by frame members 3. On thesecolumns 1 are suitable vertical feed screws 4 mounted in bearings andconnected by bevel gears 5 to transverse and longitudinal drive shafts6, one of which is arranged to be driven from some outside source bysuitable means, as for example, by a driving belt passing over beltpulle 7, the other shafts being driven from this shaft through thegearing mentioned. On the feed screws 1 are sliding nuts 8 connected inpairs by transverse rods 9, from which rods 9 the sash or saw frame 10is suspended by means of suspender-links 11. The saw frame 10 is,according to the construction shown, underhung, transverse shafts 12being provided to the ends of which the links 11 are secured, saidshafts 12 working in bearings on the underside of the saw frame, ashereinafter described.

As these stone cutters have usually been constructed in the past, theSuspender-links have hung vertically so as to oscillate in verticalplanes. It has been found that with this construction, excessive wear ofthe bearings connecting the suspender links and saw frame, isinevitable, the result of this wear being looseness which renders theframe unsteady, the frame having then more or less lateral motion, whichinterferes with the accuracy of the operation desired. It has also beenfound that, when the construction referred to has been used, thesuspender-links are not themselves sufliciently stiff. To stifi'en theselinks, and also to reduce the side motion of the frame, diagonal braceshave been provided, these braces being adjustable for wear; but it hasbeen found that these diagonal braces when employed also work loose anddo not give the desired rigidity.

One portion of my invention consists in arranging the Suspender-links atangles, instead of vertically, the main frame of the machine beingcustomarily broader than the sash or saw frame, the suspender-linksprojecting inwardly and downwardly from their point of pivotal supporton the rods 9, so that said rods 9, the Suspender-links 11, and theshafts 12, together form two trusses of very great inherent stiflness;and to make the structure yet more rigid, I make these links 11 ofconsiderable breadth transversely, said links being preferably ofI-section with stiffening ribs 13 between their flanges. Such astructure may oscillate back and forth with practically no transversemotion whatever, there being in the truss structure no joints subject towear; and, to insure accurate move ment of the saw. frame, it onlyremain to provided proper bearings of said frame on the shafts 12 and toprotect these bearings against the entry of gritwhich latter is alwayspresent in large quantities about machines of this sort and will workinto the extent, against the entry of grit and the like. Fig. 3illustrates one suitable construction of bearing for the saw frame, andFigs. 7 and 8 another suitable construction. In the construction shownin Fig. 3,each bearing comprises a removable journal 'bush1n g 14,secured to the shaft 12 on which t is mounted, and working within ababbitted bearing-box 15 formed in the frame 10. At the outside of eachbearing there is a collar 16 formed on the shaft 12. The bearing isinclosed by a box-like member 17 (Fig. 5) slotted at the ends so that itmay be passed over the shaft 12 from below, and may be secured to thesaw frame 10; and at the outer side of the saw frame there is aprotecting plate 18, likewise secured to the saw frame, covering the-endof the protector 17, and the end-slot 19 in said box 17 this plate 18being slotted to permit it to be passed over the shaft from above. Thereis also a corresponding plate 18 on the inner side of the box 17. Itwill be seen that the plates 18 substantially close the slots 19 in box17 and that said box in turn substantially closes the slots in saidplates 18; the combination of these plates 18, box 17 the collar 16 andthe flanged head 20 of the journal bushing 14, together formingeflicient means to prevent the entry of grit to the wearing surfaces ofjournal bushing 14 and bearingface 15.

As shown particularly in Fig. 3, the outer side of each box 17 is setinto a corresponding recess in'the saw frame, so that its outer surfaceis flush with the side of the saw frame; and the protecting plate 18,secured directly to the side of the saw frame, therefore fits the sideof the box closely.

The bearings of the saw frame are lubricated by suitable oil cups 21connected by ducts 22 to the bearing.

It will be obvious that the bearing construction shown is not restrictedto use with angularly arranged suspender links, such as shown in Fig. 1;and in Fig. 6 I have shown this bearing construction in a machine inwhich the suspender links hang vertical, these links being, however, ofconsiderable breadth so as to have considerable stifiness. In general, Iprefer to arrange the suspender links angularly, as shown in Fig. 1,except where the conditions of use forbid making the frame of themachine considerably broader than the saw frame. As shown particularlyin Fig. 3, I not only bolt the suspender links 11 to the shafts 12, butin addition provide end screws 23, screwing into the ends of shafts 12,and collars 24, pressed by said screws against the ends of the links,said screws 23 and collars 24 forming additional means for securing thelinks and shafts together and for preventing possible looseness at thejoints between the links and shafts 12. In the other form ofbearingprotector construction shown in Figs. 7 and 8, the bearingprotector comprises two boxes, 25 and 26, both located on the under sideof the saw frame, the box 26 fitting up inside the box 25 and beingsecured thereto by bolts '27. The upper box, 25, is secured to the sawframe by the same bolts which secure the bearing strut 28 to said frame.

hat I claim is 1. A stone-sawing machine such as described, comprising amain frame, transverse shafts suitably supported, a saw frame, sawframe-supporting links mounted on said shafts, and projecting inwardlyfrom their points of support on said shafts, means pivotally connectingsaid saw frame to said links, and means for preventing looseness at theoints between said links and said pivotally-connecting means.

2. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, saw framesupporting links mountedon said shafts, and projecting inwardly from their points of support onsaid shafts, shafts connecting the ends of opposite links in pairs andforming, with said links and the transverse shafts, rigid trusses, and asaw frame carried by said trusses.

3. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, saw framesupporting links mountedon said shafts, shafts connecting the ends of opposite links in pairsand forming, with said links and the transverse shafts, rigid trusses,and a saw frame carried by said trusses.

4. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, saw framesupporting links mountedon said shafts, shafts connecting the ends of opposite links in pairsand forming, with said links and the transverse shafts, rigid trusses,and a saw frame having bearings on the shafts connecting :the ends ofsaid links.

5. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, saw framesupporting links mountedon said shafts,

and pro ecting inwardly from their points of support on said shafts,shafts connecting the ends of opposite links in pairs and form ing, withsaid links and the transverse shafts, rigid trusses, and a saw framehaving bearings on the shafts connecting the endsof said links.

6. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, suspender links carried thereby,means connecting the ends of said suspender links and forming therewithand with said transverse shafts, rigid trusses, and a saw frame havingon its underside bearings by which it is supported by said links.

7. A stone-sawing machine such as described, comprising a main frame,transverse shafts suitably supported, suspender links carried thereby,shafts connecting the ends of said suspender links and forming therewithand with said transverse shafts, rigid trusses, and a saw frame havingon its underside bearings on said shafts connecting the ends of saidsuspender links, by which bearings it is supported by said links.

8. A stone-sawing machine such as described, comprising a saw frame,suspender links and shafts connecting said links in pairs, and bearingsfor said shafts and frame comprising bearing boxes on the underside ofthe frame, said shafts provided with bearing journals having shouldersat their ends, bearing-protecting boxes inclosing said bearings andslotted at their ends to per-- mit them to be passed over said shafts,and protector plates covering said ends of the boxes.

9. A stone-sawing machine such as described, comprising a saw frame,suspender links and shafts connecting said links in pairs, and bearingsfor said shafts and frame comprising bearing boxes on the underside ofthe frame, said shafts provided with bearing ournals, having shouldersat their ends, bearing-protecting boxes inclosing said bearings andslotted at their ends to permit them to be passed over said shafts, andprotector plates covering said ends of the boxes, said plates likewiseslotted to permit them to be passed over the shafts and secured to thesaw frame.

10. A stone-sawing machine such as described, comprising a saw frame,suspender links and shafts connecting said links in pairs, and bearingsfor said shafts and frame, said shafts provided, outside of saidbearings, with collars, and bearing protecting means comprising twoboxes inclosing one of said bearings and fitting one within the other.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOHN GILLIES. Witnesses:

H. M. MARBLE, FRANK E. RAFFMAN.

